Adaptec ULTRA160 Manuale utente

INSTALLATION

GUIDE

ADAPTEC SCSI CARD 29160

ULTRA160 SCSI CONTROLLER

29160_IG_Retail.book Page 1 Tuesday, January 11, 2000 3:02 PM

29160_IG_Retail.book Page 2 Tuesday, January 11, 2000 3:02 PM

Adaptec SCSI Card 29160

The Adaptec SCSI Card 29160 Ultra160 SCSI controller enables

you to connect up to 15 SCSI devices—such as hard disk drives,

scanners, and CD-ROM drives—to any Intel-based computer

with 32-bit or 64-bit PCI expansion slots. You can connect newer

LVD SCSI devices (includes Ultra160 and Ultra2) to the two

68-pin Low Voltage Differential/Single-Ended (LVD/SE) connec-

tors. You can also connect legacy SCSI devices to the 68-pin and

50-pin internal Single-Ended (SE) connectors.

Although the Adaptec SCSI Card 29160 is a 64-bit PCI card, it

also works in a 32-bit PCI slot. When installed in a 32-bit PCI

slot, the card automatically runs in the slower 32-bit mode.

This installation guide explains how to

•Install the Adaptec SCSI Card 29160

•Set up SCSI devices

•Connect SCSI devices

INTRODUCTION

68-pin External

LVD/SE Connector

68-pin Internal LVD/SE Connector 68-pin Internal SE Connector

50-pin Internal SE Connector

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Installation Guide

Bus Segments on the Adaptec SCSI Card 29160

The Adaptec SCSI Card 29160 features Adaptec SpeedFlex™

technology. SpeedFlex technology ensures that you get the best

performance from your LVD SCSI devices by electronically

isolating the primary LVD/SE segment from the secondary SE

segment on the SCSI bus. This allows the Adaptec SCSI Card

29160 to support LVD SCSI devices at speeds up to 160

MBytes/sec on the primary LVD/SE segment while at the same

time supporting Ultra (legacy) devices at speeds up to 40

MBytes/sec on the secondary SE segment. The following figure

shows the two SCSI segments.

If you attach Wide Ultra or Ultra SCSI devices to the

two connectors on the Primary LVD/SE segment, the data

transfer rate for all attached LVD SCSI devices will drop to

Ultra SCSI performance levels. However, if you attach only

LVD SCSI devices to the two connectors on the Primary

LVD/SE segment, data will be transferred at the maximum

possible rate (80 MBytes/sec for Ultra2 devices and

160 MBytes/sec for Ultra160 devices).

AIC-3860

AIC-7892

Primary LVD/SE Segment Secondary SE Segment

NOTE

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Adaptec SCSI Card 29160

Discharge any static electricity build-up before handling the SCSI

card by touching a grounded metal object (like the exposed metal

parts on the back of your computer).

After you turn off your computer and unplug the power cord,

remove the cover from the computer.

Locate an unused 64-bit PCI expansion slot and remove the

expansion slot cover. If the computer does not have a 64-bit slot,

you can install the card in a 32-bit PCI slot. (The expansion slot

must be compliant with PCI Rev. 2.1 or higher and must support

Bus Mastering.) Save the slot cover screw for use in Step 4.

INSTALLING THE ADAPTEC SCSI CARD 29160

STEP 1

Turn OFF power to the computer and disconnect

the power cord.

WARNING

STEP 2

STEP 3

Slot Cover Screw

Expansion Slot Cover

64-bit PCI Slot

32-bit PCI Slot

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Installation Guide

Computers may have vertical or horizontal expansion slots. Refer

to your computer manual to locate the PCI slots. If your com-

puter is a tower model, lay it on its side to make it easier to install

the Adaptec SCSI Card 29160.

Insert the Adaptec SCSI Card 29160 into the PCI expansion slot;

press down firmly until the card clicks into place, then replace the

slot cover screw. When installed properly, the card should appear

level with the expansion slot, as shown below.

Be careful when inserting the Adaptec SCSI Card

29160 in a PCI slot. Some 32-bit slots will not accommodate

it, and the card may break if you force it into the slot.

WARNING

STEP 4

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Adaptec SCSI Card 29160

There are several things you may need to do to your SCSI devices

before you connect them to the Adaptec SCSI Card 29160:

•Check the SCSI IDs

•Te r m i n a t e t h e E n d s

•Mount the Devices

Since setup can vary from device to device, always refer to the

device’s documentation for specific instructions.

Below are some guidelines for checking SCSI IDs, setting termi-

nation, and mounting devices in your computer. Refer to the

Adaptec SCSI Card 29160 User’s Reference for more information

on these topics.

Check the SCSI IDs

The Adaptec SCSI Card 29160 and each device you connect to it

must have a unique SCSI ID number ranging from 0 to 15. No

two devices can have the same number.

The Adaptec SCSI Card 29160 is preset to SCSI ID 7 and should

not be changed. If your computer will boot from a SCSI hard

disk, make sure the SCSI ID of that hard disk is set to 0. (Most

SCSI hard disks are preset to SCSI ID 0 at the factory.) The SCSI

IDs for internal devices are usually set with jumpers; SCSI IDs for

external devices are usually set with a switch on the back of the

device.

Terminate the Ends

To ensure reliable communication on the SCSI bus, the device at

the end of each cable, or the end of the cable itself, must have a

terminator installed (or enabled). Terminators must be removed,

or termination must be disabled, on devices between the ends of

each cable.

Terminating LVD SCSI Devices

LVD SCSI devices are automatically un-terminated. If you are

using internal LVD SCSI devices, a special 68-pin internal LVD

cable is required to connect the devices. Internal LVD cables

SETTING UPSCSI DEVICES

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Installation Guide

usually have a terminator built into the end of cable. With this

type of cable, it is not necessary to terminate individual internal

Ultra160 and Ultra2 devices.

If you are using external LVD devices, be sure to use an LVD

terminator to terminate the last device in the chain. If you use a

single-ended, active terminator (sometimes called an Ultra SCSI

terminator) the SCSI devices will not operate at their maximum

speed and you will be limited to shorter total cable lengths.

Terminating Ultra SCSI and Fast/Wide SCSI Devices

On most internal Ultra SCSI and Fast/Wide SCSI devices, the ter-

mination setting is controlled by setting a jumper or a switch, or

by physically removing or installing a resistor module(s). If you

are using an internal SCSI cable that has a built-in terminator,

you must disable termination on all internal devices connected to

the cable.

On most external Ultra SCSI and Fast/Wide SCSI devices, termi-

nation is controlled by installing or removing a terminating plug.

For more information, refer to the documentation for each SCSI

device.

Mount the Devices

If you have internal SCSI devices, mount each device in an avail-

able drive bay inside your computer, as shown below. Refer to

your computer and device documentation for instructions on

installing devices inside your computer.

Internal SCSI Device

Mounted in Drive Bay

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Adaptec SCSI Card 29160

You can connect up to 15 SCSI devices to the Adaptec SCSI Card

29160. Before connecting devices, be sure to review Setting Up

SCSI Devices on page 7. For additional details on connecting

devices, refer to the Adaptec SCSI Card 29160 User’s Reference.

Connecting Internal LVD SCSI Devices

Connect internal LVD SCSI devices to the internal LVD/SE

connector on the Adaptec SCSI Card 29160. To do this, use a

68-pin internal LVD cable like the one shown in Step 1 below.

Follow these steps to connect the devices:

Locate a 68-pin internal LVD SCSI cable, which may have either

twisted wires as shown below or flat, laminated wires.

CONNECTING SCSI DEVICES

SCSI devices can be connected to all four SCSI

connectors on the Adaptec SCSI Card 29160 at the same time.

We recommend that you keep your LVD SCSI devices

separate from your SE (Ultra SCSI) devices. This allows LVD

SCSI devices to transfer data at their maximum speed. (See

Bus Segments on the Adaptec SCSI Card 29160 on page 4.)

NOTE

STEP 1

Terminated End Nonterminated End

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Installation Guide

Plug the nonterminated end of the cable to the internal LVD/SE

connector.

Plug the internal LVD SCSI devices to the other cable connectors,

starting with the connector at the terminated end of the cable.

STEP 2

68-pin Internal LVD

SCSI Cable

68-pin Internal LVD/SE Connector

STEP 3

Internal LVD SCSI devices come from the factory with

termination disabled and cannot be changed. Proper SCSI

bus termination is provided by the terminator at the end of

the LVD SCSI cable. See Terminate the Ends on page 7 for

more information.

LVD (e.g., Ultra160 or

Ultra2) SCSI Devices

Built-in Terminator

on Cable

Plug First Device

to this Connector

NOTE

29160_IG_Retail.book Page 10 Tuesday, January 11, 2000 3:02 PM

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